8.25-inch, 10° objective prism in cell
Date: circa 1940
Inventory Number: 2006-1-0048
Classification: Objective Prism
Subject:
Maker: American
User: Oak Ridge Station (1931 - 2005)
User: George R. Agassiz Station, Harvard (1951 - 1982)
User: Harvard College Observatory (founded 1839)
Cultural Region:
Dimensions:
26.7 × 26.7 × 11.3 cm (10 1/2 × 10 1/2 × 4 7/16 in.)
Description:
This round objective prism has an aperture of 8 1/4 inches. It is mounted in an iron cell with flanged edges on both sides. Bolt holes are in the flanges. On opposite sides of the cell, there are two round fittings with large threaded holes.
One face of the objective prism has spacers of green tape between it and the cell.
The side of the cell is marked in white crayon: ~10° Prism
One face of the objective prism has spacers of green tape between it and the cell.
The side of the cell is marked in white crayon: ~10° Prism
Signedunsigned
Inscribedmarked in white crayon on side of cell: ~10° Prism
Historical AttributesUsed by Harvard College Observatory at its Oak Ridge Station (later known as the George R. Agassiz Station) for studying stellar spectra.
ProvenanceHarvard College Observatory, Oak Ridge Station; transfer to CHSI in 2005.